#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2011 Yesudeep Mangalapilly <yesudeep@gmail.com>
# Copyright 2012 Google, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


from __future__ import with_statement

raise ImportError("Not implemented yet.")

from watchdog.utils import platform
from watchdog.events import FileDeletedEvent, FileModifiedEvent,\
  FileCreatedEvent, FileMovedEvent, DirDeletedEvent, DirModifiedEvent,\
  DirCreatedEvent, DirMovedEvent

if platform.is_windows():
  import threading
  import time

  from watchdog.observers.winapi_common import\
    read_directory_changes
  from watchdog.observers.api import\
    EventQueue,\
    EventEmitter,\
    BaseObserver,\
    DEFAULT_OBSERVER_TIMEOUT,\
    DEFAULT_EMITTER_TIMEOUT


  class WindowsApiAsyncEmitter(EventEmitter):
    """
    Platform-independent emitter that polls a directory to detect file
    system changes.
    """

    def __init__(self, event_queue, watch, timeout=DEFAULT_EMITTER_TIMEOUT):
      EventEmitter.__init__(self, event_queue, watch, timeout)
      self._lock = threading.Lock()

    def on_thread_exit(self):
      pass

    def queue_events(self, timeout):
      with self._lock:
        pass

  class WindowsApiAsyncObserver(BaseObserver):
    """
    Observer thread that schedules watching directories and dispatches
    calls to event handlers.
    """

    def __init__(self, timeout=DEFAULT_OBSERVER_TIMEOUT):
      BaseObserver.__init__(self, emitter_class=WindowsApiAsyncEmitter,
                            timeout=timeout)


